Currently, easystepper driver supports only '4-step mode' (12-23-34-41) when energizing the coils
This does not work with all motors & drivers (e.g. 28BJY-48 & ULN2003)
This commit adds support for 8-step mode (1-12-2-23-3-34-4-41)
Note: this commit breaks backward source compatibility for the factory/constructor functions.
The instances of SPI interfaces SPI0, SPI1, ... are
pointers to SPI types on rp2040 machines, rather plain
values like other machines.
This needs restructuring the sdcard API to take a pointer
to the SPI interface rather the SPI type itself.
Removed waitserial() since it needs modem control lines
not available on most boards
See https://github.com/tinygo-org/drivers/pull/401 for details.
I haven't converted it to autogenerated assembly because AVR is
different from many other architectures (8-bit, among others) and it
didn't seem worth the effort as many chips run at 16MHz anyway.
I ran the two AVR smoke tests for the ws2812 driver and the resulting
binary is exactly the same.
This is better for various reasons:
* I don't like the inline assembly implementation in TinyGo. It kinda
works, but it's hard to use correctly.
* The Go version had a subtle bug: the i and value variables weren't
marked as modified. The compiler produced correct code by chance. In
GCC-style inline assembly, it's possible to correctly mark it as an
input+output operand.
* LLVM 14 has some changes to inline assembly that change how memory
operands can be created. Instead of supporting that, I'd like to get
rid of memory operands entirely (and possibly inline assembly in
general).
I did some light testing: the ARM assembly changed a bit but not in any
way that should have a practical effect, and the RISC-V assembly didn't
change at all.
The source code has been ported from C. It seems, the different
semantics of switch-case in Go has not been ported properly.
To fix this, remove 'break' statements and introduce 'fallthrough' where
necessary.
Signed-off-by: Oliver Stäbler <oliver.staebler@bytesatwork.ch>
Currently contains an IR Receiver device only.
An IR Sender device will be added shortly
Supports receiving only NEC (extended address) protocol including repeat codes so far
The possible branch distance is a lot shorter on ARMv6M (Cortex-M and
Cortex-M0+) for conditional branches. Therefore, convert this long
conditional branch into an unconditional branch.
This probably makes the code a little bit slower but because it is in
the low period of the WS2812 signal it shouldn't matter for the
protocol. And it avoids difficult workarounds specifically for the
RP2040.
Neil Davis
deadprogram
tgilkerson
Olaf Flebbe
Yurii Soldak
Daniel Esteban
Michael Meister
Daniel Esteban
Ayke van Laethem
Kuiki
Oliver Stäbler
Patricio Whittingslow
sago35
Elfo404
Anton Fisher
Donia Chaiehloudj
Steven Pearson
BCG
Drayton Munster
Olivier Fauchon